Improvement in removable calks for horseshoes



G. wxGmsWoL-D. REMOVABLBCALL' &c., FOR HORSESHOBS.

Patented Aug.v 2, 1864;

*rares PAT-ENT OFFICE.

' GEORGE W. GRISWOLD, OF NEW YORK, N. Y.

IMPROVEMENT IN. REMOVABLE ACALKS FOR HORSESHCES.A

Specification forming part 'of Letters Patent No. 43,'247, dated August 2, 1864.

To'aZZ whom. it may concern/:

Beit known that I, GEoReE W. GRIswoLD, of New York, `in the county of New York and State of New York, have invented certain new and useful Improvements in Removable Calks and Toe-Pieces for Horseshces.; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, :making a a part of this specification, in Which-u Figure 1 represents the under side of a horse-l shoe. Fig. 2 represents sections through the calks and that portion of the shoe to which of elasticity, so as to prevent the animal from y straining and injuring himself upon hard roads or pavements. y

My invention consists in setting the calks or toe-piecesk in a surrounding or bed of vulcanized or hardened rubber, or its equivalent elastic material, so as to .break the force of the jar or strain upon the feet of the animal, but

at the same time. make them sufliciently rigid .for all practical purposes.

Tol enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings. p

A represents a horseshoe, which may be of any of the known forms; and B represents the calks, and C the toe-pieces thereof. I make sockets orrecesses a in the shoe where the calks or toc-pieces are to be placed, and surround the calk or toe-piece with rubber or its equivalent, b, and then insert both into the socket, as shown in the drawings. `In some cases, if so preferred, the rubber may be under as well as around the calk or toe-piece, as shownfat e, Fig. 3.

The calks or toe-pieces may be secured to the-shoe by a pin, d, or by a. screw, key, or

any other well-known device; or a screw may be cut upon the calk or toe-piece, so that it may be screwed into the shoe, and if found desirable to allowthe piece to yield slightly in the line of its length, it may be done by so adapting the fastening as to admit of such yielding.

.The calks and toe-pieces are best made of steel; and I have shown them as pointed, though they may be of any other form,l or roughened in any suitable manner to prevent slipping. The pieces may be removed'or'replaced without taking ofi' the shoe from the animals foot, and by being elastic or yielding .they are not so apt tov tear or wrench oft as when rigid. v

I am aware that springcalks have been assayed, the spring being of vmetal and attached to the shoe. They do not answer a good purpose.

v I am also aware that rubber has been placed under and between horseshoes and embedded in a groove therein. I lay no claim to any such, my invent-ion being applicable only to calks or toe-pieces embedded in rubber in suits able recesses and heldthere by the pressureof the rubber or by the aid of pins, screws, or keys; or the calk may be embedded in rubber in a metallic ferrule or sleeve, and the sleeve screwed or otherwise fastened to the shoe,- which would make them more readily remov'- able for repairs or replacement.

Having thus fully described the nature, object, and purpose of my invention,what I claim therein as new, and desire to secure by Letters Patent, is-

Surrounding or embedding removable calks or toe-pieces for horseshoes in vulcanized rubber or other equivalent elastic material for the purpose of holding lthe calks rmly in place and relieving the strain or jar upon the foot of theanimal, substantially as described.

c. w. Gnisvvonn.-

his DENNIS Cnsr.

mark. 

